Partial Upgrades

Broken Upgrade Process/Partial Upgrade

Some times the upgrade process can not complete successfully. If so update manager will show the following box:

Error creating thumbnail: Unable to save thumbnail to destination

Selecting 'Partial Upgrade' will start a self-healing process that will bring the system back to working state.

You will need to click through the following screen to begin.

Error creating thumbnail: Unable to save thumbnail to destination

It should fix itself. When it is done you should run the check for new updates and install them.